#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
#define cin fin
#define cout fout
int n, x[100], nrsol;
void afis(int k)
{
    nrsol++;
    for (int i=1; i<=k; ++i)
        cout<<x[i]<<' ';
    cout<<'\n';
}
void bt(int k)
{
    for (int i=x[k-1]+1; i<=n; ++i)
    {
        x[k]=i;
        afis(k);
        bt(k+1);
    }
}
int main()
{
    cin>>n;
    ///x[0]=0;
    bt(1);
    return 0;
}